headshot photo of Dr. Warren de Bruyn

Dr. Warren de Bruyn

Schmid College of Science and Technology; Chemistry
Office Location: Keck Center for Science and Engineering 237
Phone: (714) 628-7353
Scholarly Works:
Digital Commons
University of Kwazulu-Natal, Bachelor of Science
University of Kwazulu-Natal, Master of Science
Boston College, Ph.D.


Warren de Bruyn obtained his Ph.D. in Physical Chemistry from Boston College in 1994.  He held post-doctoral and research faculty positions at the University of Miami and UCI before coming to Chapman in 2002.  He is a physical/analytical chemist with primary research interests in atmospheric chemistry.  Current research is focused on the oceanic cycling of sulfur species and oxygenated hydrocarbons into or out of the troposphere which have implications for global climate change and the oxidative capacity of the troposphere.  This work involves instrument development, laboratory kinetic measurements, coastal field measurements and open ocean measurements.  He is committed to undergraduate student research and usually has 3-4 Chemistry majors working in his lab.  Since 2007 he has had 4 major proposals funded (three from NSF and 1 from ACS).  During that time he has also published 15 journal articles, 9 with undergraduate student co-authors.   


General Chemistry (CHEM 140/150)
Analytical Chemistry (CHEM 411)
Physical Chemistry (CHEM 340/441)
Atmospheric Chemistry (CHEM 427)


Boston College
Ph.D. 1994: Physical Chemistry

University of Natal, South Africa
M.Sc. 1989: Physical Chemistry

University of Natal, South Africa
B.S. 1986: Chemistry/Math


Associate Professor, Department of Chemistry, Chapman University, 2007-Present
Assistant Professor, Department of Physical Sciences, Chapman University, 2002–2007
Assistant Research Faculty, Department of Earth System Science, University of California, Irvine, 2000-2002
Assistant Research Professor, Division of Marine and Atmospheric Chemistry, RSMAS, University of Miami, 1997-2000
Postdoctoral Fellow, Marine & Atmospheric Chemistry, RSMAS, University of Miami, 1994-1997

Recent Creative, Scholarly Work and Publications

Porter, J.G., W. de Bruyn W., E.S Saltzman, Eddy flux measurements of sulfur dioxide deposition to the sea surface, Atmos. Chem. Phys. Discuss., https://doi.org/10.5194/acp-2018-495
Bowen J.C., C.D. Clark, J. Keller, W.J. de Bruyn, Optical properties of chromophoric dissolved organic matter (CDOM) in surface and pore waters adjacent to an oil well in a southern California salt marsh, Marine Pollution Bulletin, 114, 157-168, 2017
De Bruyn, W.J., C. D. Clark, O. Barashy, S. Hok, and M. Sensted, The biological degradation of acetaldehyde in coastal seawater, Marine Chemistry, 192, 13-21, 2017.
Bell, T. G., S. Landwehr, S.D. Miller, W. J. de Bruyn, A. Callaghan, B. Scanlon, B. Ward, M. Yang and E.S. Saltzman, Estimation of bubble mediated air-sea gas exchange from concurrent DMS and CO2 transfer velocities at intermediate-high wind speeds, Atmos. Chem. Phys.17, 9019-9033, 2017.
Bell, T.G., W. de Bruyn, C.A. Marandino, S.D. Miller, C.S.Law, M.J.Smith, and E.S Saltzman, DMS gas transfer coefficients from algal blooms in the Southern Ocean, Atmos. Chem. Phys.15, 1783-1794, 2015
Clark, C. D., W. J. De Bruyn, P. Aiona, Temporal variation in optical properties of chromophoric dissolved organic matter (CDOM) in Southern California coastal waters with near-shore kelp and sea grass, Limnology and Oceanography, 61 (1), 32-46, 2015.
Clark, C.D., W. J. De Bruyn, and J. G. Jones,, Photoproduction of hydrogen peroxide from model compounds for chromophoric dissolved organic matter: quinines, fulvic and humic acid, Marine Pollution Bulletin, 79, 54-60, 2014.
De Bruyn, W.J., C. D. Clark, L. Pagel, H. Singh, Loss rates of acetone in filtered and unfiltered coastal seawater, Marine Chemistry, 150, 39-44, 2013.
Bell, T.G., W. de Bruyn, S.D. Miller, B. Ward, K. Christensen, and E.S. Saltzman, Air/sea DMS gas transfer in the North Atlantic: evidence for limited interfacial gas exchange at high wind speed, Atmos. Chem. Phys., 13, 11073-11087, 2013.
De Bruyn, W. J., C. D. Clark and L. Pagel, Oxygenated hydrocarbons in coastal waters, Oceanography, Marco Marcelli (Ed.), ISBN: 978-953-51-0301-1, InTech, 2012.
De Bruyn, W.J., C. D. Clark, K. Ottelle and P. Aiona, Photochemical degradation of phenanthrene as a function of natural variables modeling freshwater to marine environments, Marine Pollution Bulletin, 64, 532-538, 2012
De Bruyn, W. J., C. D. Clark, L. Pagel, and C. Takahara,, Photoproduction of formaldehyde, acetaldehyde and acetone from chromophoric dissolved organic matter in coastal waters, J. Photochem. Photobiol. A: Chemistry, 226, 16-22, 2011.
Murat Aydin, Stephen B. Montzka, Mark B. Battle, Margaret B. Williams, Warren De Bruyn, Kristal Verhulst, Cheryl Tatum, Baris K. Gun, David A. Plotkin, Brad D. Hall, James H. Butler, and Eric S. Saltzman, Post-coring entrapment of modern air in polar ice: Evidence from CFC-12 measurements in Antarctic firn air and shallow ice cores, Atmos. Chem. Phys. 10, 5135-5144, 2010.
Catherine D. Clark, Warren J. De Bruyn, Charlotte. B. Hirsch, and Scott D. Jakubowski, Spatial and Temporal Measurements of Hydrogen Peroxide Concentrations in Recreational Marine Bathing Waters in Southern California, Water Research, 44, 2203-2210, 2010
C.D. Clark, W. J. De Bruyn, C.M. Hirsch, P. Aiona, “Diel Cycles of Hydrogen Peroxide in Marine Bathing Waters in Southern California, USA: in situ Surf-zone Measurements”, Marine Pollution Bulletin, 60, 2284-2288, 2010.
C. A. Marandino, W. J. De Bruyn, S.D. Miller and E. S. Saltzman, Open ocean DMS air/sea fluxes over the eastern South Pacific Ocean, Atmos. Chem. Phys, 9, 1-12, 2009.
Catherine D. Clark, Warren J. De Bruyn, and Joshua G. Jones, Measurements of Hydrogen Peroxide Production Rates in Marine Bathing Waters in Southern California, Chemosphere, 76, 141-146, 2009
S.D. Miller, C. A. Marandino, W. J. De Bruyn, and E. S. Saltzman, Air-sea gas exchange of CO2 and DMS in the North Atlantic by eddy covariance, Geophys. Res. Lett, doi:10.1029/2009GL038488, 2009
E. S. Saltzman, W.J. De Bruyn, C.A. Marandino, M.J. Lawler, and Cyril McCormick, A chemical ionization mass spectrometer for underway shipboard analysis of dimethylsulfide, Ocean Sci., 6, 1569-1594, 2009.
Clark, C.D., W. J. De Bruyn, S.D. Jakubowski, S. B. Grant, Hydrogen Peroxide Production in Marine Bathing Waters: Implications for Fecal Indicator Bacteria Mortality, Marine Pollution Bulletin, 56, 397, 2008.
C. A. Marandino, W. J. De Bruyn, S.D. Miller and E. S. Saltzman, DMS air/sea flux and gas transfer coefficients from the North Atlantic summertime coccolithophore bloom, Geophys. Res. Let. vol 35 L23812, 2008.